[6] Uromastix princeps can reach a body length (including the tail) of about 26 cm (10 in).

[5] The body color may show various shades of olive-gray, greenish or blue, with small brown spots.

In males, the back is brown-red or green with small dark spots, while the belly is yellowish and the tail is gray-green or brick-red.

The females are gray-brown with a reddish tinge and small spots on top.

[5] The tail is ellipsoidal and significantly shorter (35–53% of the body length) than in other members of the genus,[5] but it shows longer and sharper spikes arranged in 9–14 whorls.